The BeginDocument DSC should include the following colon.

[DeriJames]

The keywords in PSUtils.pm starting at line 131 should include the colon at the end. Attached is a test file which works properly once the colons are added:-webpage-full.ps.gz
} elsif ($keyword eq "BeginDocument:" ||
$keyword eq "BeginBinary:" ||
$keyword eq "BeginFile:") {
$nesting++;